Internal combustion engines are designed for a fuel with a specific consistency. The fuel is made from raw materials that have various consistencies so they have to be refined. The refinement is complex and thus expensive, which leads to it being centralized. Gasoline is refined from crude oil.
Proposed for deletion. Nothing links here and the point is made on various pages about biofuels/ Babington burner etc.
Is there a requirement that something must link? Can that not happen later? -Marcin
The topic is very similar page: http://opensourceecology.org/wiki/Pure_plant_oil_as_fuel - both could be merged. -Rasmus